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HRM600 - Unusual peaks with impact on Garmin Run Coach

SVO1968

Recently I do have Base-Runs in my Garmin Run Coach Training with unusal heart peaks. If it occurs it is often just for less than 60s. If it happens in the first 10 minute it can last for longer. 

The belt sits tight. I always make it wet with water before wearing it. 

I do have the impression that they are wrong measurements. Sometimes a Base-Run is recognized with anerob effort. It is an issue for me because Garmin Run Coach adapts the next training based on this. 

Any ideas how to fix this?

  • 0

    First of all, I would analyze a FIT file of an activity where it happened, with Fitfileviewer, and verify there whether the the wrong signal really comes from the HRM - comparing the charts "wrist heart rate", "external heart rate", and "heart rate" (the resulting data) will reveal it. If the Data Source Switching option is enabled (and on some watches even when disabled), it can happen that the watch uses the wrist HR for a period of time (for example when the HRM disconnects, or sends unexpected data).

    You can also detect some of these issues by looking at the Respiration Rate graph in Connect. If there are any gaps, then the connection between HRM and the watch did not work during those periods.

    If the wrong signal comes rather from the wrist sensor, then either disabling the Data Source Switching (in Sensors & Accessories), or disabling the wrist HR completely by assigning the Jacket Power Mode to the concerned activity profile would prevent switching to the wrist HR.

    And if the wrong data really comes from the strap, then I would assure HRM 600 is fully charged before using it, and I also recommend using a bit of conductive gel for ECG electrodes. You can buy a tube of it in most pharmacies. I've bought mine a few years ago for some 3€, and despite using it several times per week, it is still half full.

  • 0 in reply to trux

    Thank you for this.

    With a look at the resperation rate graph I can see matches with the unusual heard rate. I even could see additonal gaps in the respiration rate graph and identified additonal issues in hear rate graph. 16 gaps of different duration in 55 minutes. 

    I will try a gel. Battery shouldn't be the issue.